Tube reshaping pliers with internal and external wall engaging members



March 1.2, 1957 M. c. REYNOLDS 2,784,623

TUBE RESHAPING PLIERS WITH INTERNAL AND EXTERNAL WALL ENGAGING MEMBERSFiled May 21, 1954 T l \IV INVENTOR. Marv/r7 C. Reyna/d3 United StatesPatent i TUBE RESHAPING PLIERS WITH INTERNAL AND EXTERNAL WALL ENGAGINGMEMBERS This invention relates to a hand tool and more particularly to atool of the pliers type.

The primary object of the invention is to facilitate the reshaping ofthe mutilated end of a length of relatively soft deformable tubing torestore the end of the tubing to its initial circular contour.

Another object is to enable the end of the tubing to be readily restoredto its initial diameter and to facilitate the coupling of the length oftubing to a fitting or the like.

The above and other objects may be attained by employing this inventionwhich embodies among its features crossed handles mounted to move towardand away from one another about a common axis, substantiallysemicircular tube embracing jaws carried by the handles and extendingoutwardly therefrom for movement by said handles about the common axisadjacent one side of the tool and contraction into engagement with alength of tubing adjacent a mutilated end thereof, and substantiallysemi-circular anvils carried by the handles and extending outwardlytherefrom between the jaws for entrance into the length of tubingembraced by the jaws and expansion into contact with said length oftubing as the jaws contract thereabout.

Other features include a compression coiled spring carried by andextending between the handles for expanding the handles under yieldingpressure and holding the jaws expanded and the anvils contracted.

Other features include disposing the concave sides of the arcuate jawstoward one another and disposing the curved sides of the anvils towardthe concave sides of opposite jaws.

Still other features include inclining the jaws adjacent the endsthereof remote from the handles to guide the jaws onto a length oftubing, and inclined extensions carried by the anvils and extendinglongitudinally therefrom for guiding the anvils into the length oftubing.

In the drawing:

Figure 1 is a fragmentary side view of a hand tool embodying thefeatures of this invention, portions of the handles being broken away;

Figure 2 is a view similar to Figure 1, showing the jaws contracted andthe anvils expanded;

Figure 3 is a longitudinal sectional view taken substantially on theline 33 of Figure 2;

Figure 4 is a transverse sectional view taken substantially on the line4-4 of Figure 2;

Figure 5 is a transverse sectional view taken substantially on the line5-5 of Figure 2;

Figure 6 is an exploded fragmentary perspective view of the jaws andanvils; and

Figure 7 is a plan view of one of the jaws.

Referring to the drawings in detail, this tool designated generally 10comprises crossed handles 12 and 14 connected together by a pivot 16 formovement about a common axis. Carried by the handle 14 and extendinglongitudinally therefrom is an extension 18 carrying an arcuate jaw 20and an arm 22 which extends outwardly 1 2,784,623 Patented Mar. 12, 1957from the extension 18 adjacent the jaw 20 and carries adjacent its endremote from the extension 18 an anvil 24 having a convex surface 26 onthe side thereof remote from the concave surface 28 of the jaw 20.

Carried by the handle member 12 and extending longitudinally therefromadjacent the extension 18 is an extension 30 carrying an arcuate jaw 32,the concave surface 34 of which is disposed toward the concave surface28 of the jaw 20 and carried by the extension 30 and projectingoutwardly therefrom is an anvil 36, the convex surface 38 of which isdisposed toward the concave side of the jaw 20.

The ends of the jaws 20 and 32, respectively, are inwardly inclined asat 38 to aid in guiding the tool into proper position about the end of alength of tubing, and carried by the anvils 24 and 36 are taperedextensions 40 which, assist in guiding the anvils 24 and 36 into thetubing. A compression coiled spring 42 extends between the handles 12and 14 to yieldingly urge the handles apart and the jaw members intoexpanded position, as illustrated in Figure 1.

In use, the expanded tool is placed over the end of a piece of tubing tobe straightened with the anvils 24 and 36 entering the interior of thetubing while the jaw members 20 and 32 encircle the exterior of thetubing. Upon advancing the handles toward one another, the jaws 2t and32 will be advanced into contact with the exterior surface of the tubingadjacent the end thereof while the anvils 24 and 36 will be expendedinto contact with the tubing so that by repeatedly expanding andcontracting the jaw members and rotating the tool about the tubing, themutilated end thereof may be restored to its initial condition.

While in the foregoing there has been shown and described the preferredembodiment of this invention, it is to be understood that minor changesin the details of construction, combination and arrangement of parts maybe resorted to without departing from the spirit and scope of theinvention as claimed.

What is claimed is:

1. A hand tool for reshaping a mutilated end of a length of relativelysoft deformable tubing, said tool comprising pivotally connected crossedhandles to move toward and away from one another about a common axis,substantially semicircular tube embracing jaws carried by the handlesand extending laterally therefrom for movement thereby about the commonaxis from one side of the tool and contraction into engagement with alength of tubing adjacent a mutilated end thereof, crossed extensionscarried by the handles adjacent the jaws, and substantially semicircularanvils carried by the extensions and extending laterally therefrombetween the jaws for entrance into the length of tubing embraced by thejaws and expansion into contact with said length of tubing as the jawscontract thereabout.

2. A hand tool for reshaping a mutilated end of a length of relativelysoft deformable tubing, said tool comprising pivotally connected crossedhandles to move toward and away from one another about a common axis, asubstantially semicircular tube embracing jaw carried by one of thehandles and extending laterally therefrom for movement by said handlesabout the common axis from one side of the tool and contraction intoengagement with a length of tubing adjacent a mutilated end thereof, asubstantially semicircular anvil carried by said one handle andextending laterally therefrom adjacent the concave side of the jaw, anarm carried by the other handle and extending between the jaw and theanvil, a second anvil carried by the arm for movement by the otherhandle between the jaw and the first mentioned anvil, and a second jawcarried by the other handle in spaced relation to the second anvil andin opposed relation to the first jaw, the ends of the jaws remote fromthe handles being inclined inwardly to define guides for guiding thejaws onto a length of tubing, and inclined extensions carried by theanvils and extending longitudinally therefrom for guiding the anvilsinto the length of tubing.

4 V I t. 1.

References Cited in the file of this patent UNITED STATES PATENTS MontoFeb. 18, 1890 Gottfried Apr. 14, 1914 Bergman et a1. Sept. 27, 1932Clark May 23, 1933 Baldwin Apr. 25, 1944

